CVE-2026-47323

CVE-2026-47323 is a critical-severity security vulnerability in org.apache.camel:camel-cxf-rest (maven), affecting versions >= 3.18.0, < 4.14.6. It is fixed in 4.14.6, 4.18.2.

Summary

Camel-CXF and Camel-Knative Message Header Injection via Missing Inbound Filtering

The CXF and Knative HeaderFilterStrategy implementations (CxfRsHeaderFilterStrategy in camel-cxf-rest, CxfHeaderFilterStrategy in camel-cxf-transport, and KnativeHttpHeaderFilterStrategy in camel-knative-http) only filter outbound Camel-internal headers via setOutFilterStartsWith, while not configuring inbound filtering via setInFilterStartsWith. As a result, an unauthenticated attacker can inject Camel-internal headers (e.g. CamelExecCommandExecutable, CamelFileName) via HTTP requests to CXF-RS or CXF-SOAP endpoints. When a route forwards messages from these endpoints to header-driven components such as camel-exec or camel-file, the injected headers override configured values, enabling remote code execution or arbitrary file writes. This is the same pattern that was previously addressed in camel-undertow (CVE-2025-30177), the broader incoming-header filter (CVE-2025-27636 and CVE-2025-29891), and non-HTTP strategies (CVE-2026-40453).

This issue affects Apache Camel: from 3.18.0 before 4.14.6, from 4.15.0 before 4.18.2.

Users are recommended to upgrade to version 4.19.0, which fixes the issue. If users are on the 4.18.x LTS releases stream, then they are suggested to upgrade to 4.18.2. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6.

Impact

CVE-2026-47323 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.14.6, 4.18.2); upgrading removes the vulnerable code path.

Affected versions

org.apache.camel:camel-cxf-rest (>= 3.18.0, < 4.14.6) org.apache.camel:camel-cxf-rest (>= 4.15.0, < 4.18.2)

Security releases

org.apache.camel:camel-cxf-rest → 4.14.6 (maven) org.apache.camel:camel-cxf-rest → 4.18.2 (maven)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

See it in your environment

Remediation advice

Upgrade the following packages to resolve this vulnerability:

org.apache.camel:camel-cxf-rest to 4.14.6 or later; org.apache.camel:camel-cxf-rest to 4.18.2 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

  1. What is CVE-2026-47323? CVE-2026-47323 is a critical-severity security vulnerability in org.apache.camel:camel-cxf-rest (maven), affecting versions >= 3.18.0, < 4.14.6. It is fixed in 4.14.6, 4.18.2.
  2. How severe is CVE-2026-47323? CVE-2026-47323 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
  3. Which versions of org.apache.camel:camel-cxf-rest are affected by CVE-2026-47323? org.apache.camel:camel-cxf-rest (maven) versions >= 3.18.0, < 4.14.6 is affected.
  4. Is there a fix for CVE-2026-47323? Yes. CVE-2026-47323 is fixed in 4.14.6, 4.18.2. Upgrade to this version or later.
  5. Is CVE-2026-47323 exploitable, and should I be worried? Whether CVE-2026-47323 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
  6. What actually determines whether CVE-2026-47323 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
  7. How do I fix CVE-2026-47323?
    • Upgrade org.apache.camel:camel-cxf-rest to 4.14.6 or later
    • Upgrade org.apache.camel:camel-cxf-rest to 4.18.2 or later

Other vulnerabilities in org.apache.camel:camel-cxf-rest

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